Sometimes when you're speaking in front of a huge audience, it can be beneficial to focus on the topics they want to hear about the most.

Google is rolling out an update to their Slides application that will let you put a URL in one of your slides and then people in the audience can go to that link. While at that link, those audience members can type up questions of their own and even vote on the questions they want answered the most.

The update even has a virtual laser pointer that will allow the speaker to draw focus to one particular part of the slide during a presentation.